Suchergebnisse

"This third volume in the Commonwealth Blue Economy Series, Capture Fisheries, presents recommendations that could be implemented by SIDS to protect and sustainably develop their capture fisheries within a blue economy model. The book describes some of the challenges faced in managing capture fisheries, the potential for a blue economy approach to making improvements, some suggestions for strategies and activities that could be undertaken by SIDS to further these aims, and a number of case studies illustrating positive actions that have been taken by SIDS and their outcomes" -- Provided by publisher

The landing obligation of the reformed European Union Common Fisheries Policy is designed to encourage more selective fishing strategies and improve recording of catches. There are allowable exemptions to this landing obligation including for species with high post-release survivability. Discarding patterns of prawns (Nephrops norvegicus) were evaluated in a trawl fishery in the Firth of Clyde, West Scotland, which supplies the live-catch market. Around 30% of the Nephrops caught were discarded, but the reasons for discarding changed seasonally. Using visual indices, physiological biomarkers, and video recordings, this study evaluated the physiological condition linked to short-term survival and predator avoidance behavior of the discarded animals. Although short-term survival after 48-h recovery was high (around 90%) and physiological measures indicated that discarded Nephrops can recover from trawling, survival was negatively affected by levels of physical damage and Hematodinium infection. Taking into consideration these factors, a conservative estimate for discard survival was 63%-88%. Underwater video showed that Nephrops discarded in good condition rapidly recovered normal behavior when placed on the seabed. Moribund animals, however, took up to 10 min to return to an upright posture and this time was sufficient for predators to be attracted. Since around 20% of Nephrops were in a moribund condition immediately after trawling, the survival estimates based on enclosed recovery experiments may need correcting by up to this amount to account for potential interactions with predators on the seabed. The post-release survival rates in discarded Nephrops suggested for this fishery are relatively high compared with other Nephrops trawl-fisheries which have been studied. This could be explained because this fishery targets the live market, prioritizes product quality over volume, and uses short-duration tows leading to relatively low levels of physical damage to the Nephrops.

Fisheries products are globally traded commodities, which have led to varying degrees of social and economic dependency for producing regions. These dependencies become more evident at times of major demand or supply shocks. Resilience to such shocks is intertwined with, and rooted in, the intra-sectoral structure and governance frameworks. This work analyses two large-scale, capital-intensive and export-oriented seafood sectors: Atlantic salmon and North-east Atlantic mackerel, responded to the environmental, economic and geopolitical shocks accompanying their development, from a UK perspective. Intra-firm controls are identified as elements, which have delivered resilience and strength in these two sectors. This work highlights the central, yet different role of the UK government in increasing their resilience and underlying producing regions. Our work contributes to the broader context of regional development and changing global food demand identifying both domestic and external threats to sustainability. Our approach aims to expand the debate around seafood production from 'food security' to a transdisciplinary analysis, which incorporates wider economic, social, and ecological sustainability aspects.